The inability to accurately predict how severely a solar storm will impact Earth remains one of the greatest challenges facing scientists today. Originating from the central star of our Solar System, these massive space weather events hold the power to inflict severe damage on Earth’s infrastructure—particularly telecommunications networks, satellites, and spacecraft.
How Solar Storms Interact with Earth
Solar storms occur when the Sun ejects immense amounts of energy-laden material into space. When this coronal mass reaches Earth, it collides and interacts directly with our planet’s magnetic field. This interaction releases huge quantities of energy, leading to widespread electrical and magnetic disruptions.
A visible manifestation of this cosmic collision is the breathtaking display of the aurora borealis (Northern Lights) and aurora australis (Southern Lights), formed as solar plasma interacts with Earth’s magnetosphere.
“It can affect everything related to telecommunications networks, satellites, electronic devices; the entire electronic sector could be affected. That is why it is important to study the Sun and these solar storms; in fact, part of the work being done is trying to predict how they will affect us.”
— Fernando Quirós, Physicist at the UCR Planetarium
The Delay Between Light and Impact
Understanding the timeline of a solar storm is key to preparing for its consequences. According to Quirós, the luminous light generated by a solar explosion reaches Earth in just 8 minutes. However, the physical material and magnetic plasma travel much slower, taking between one to three days to arrive.
This 24-to-72-hour window gives researchers a small margin to analyze incoming data and project potential damage, though predicting the precise severity of the impact remains an active field of research.
Global and Regional Efforts to Forewarn the World
Scientists are working not only to issue warnings after a flare is detected, but to anticipate solar activity before it occurs. Predicting these events beforehand is immensely complex, and current models cannot predict the impact with 100% certainty.
Despite these difficulties, significant progress is being made internationally and locally. In Costa Rica, the Santa Cruz Radio Observatory (ROSAC)—developed by the University of Costa Rica (UCR) in collaboration with international partners—will analyze the Sun’s behavior in unprecedented detail.
Uncovering Extreme Solar Storms of the Past
Looking back through history provides crucial context for modern space weather research. In 2024, a study led by Irina Panyushkina of the University of Arizona—published in Communications Earth & Environment—revealed that a massive solar storm struck Earth 2,687 years ago.
By analyzing growth rings from ancient tree trunks in Siberia and excavated wood, researchers detected spikes in carbon-14 and beryllium-10 isotopes—signatures left behind by intense cosmic radiation.
What Are “Miyake Events”?
Extremely powerful solar radiation spikes found in tree rings are classified as Miyake events, named after Fusa Miyake, the Japanese physicist who first identified these radioactive isotope surges.
Despite discovering these ancient super-storms, scientists have yet to identify a recurring pattern or timeline between events. As Panyushkina noted in her publication:
“Tree rings give us an idea of the magnitude of these massive storms, but we cannot detect any kind of pattern.”
Looking Ahead
As human society becomes increasingly dependent on satellite constellations, GPS navigation, and interconnected power grids, solving the puzzle of solar weather prediction is no longer just a scientific pursuit—it is an essential requirement for safeguarding modern civilization.
